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-rw-r--r--ctree.h23
1 files changed, 16 insertions, 7 deletions
diff --git a/ctree.h b/ctree.h
index 54748c84..1c3740cf 100644
--- a/ctree.h
+++ b/ctree.h
@@ -61,6 +61,9 @@ struct btrfs_trans_handle;
#define BTRFS_CSUM_TREE_OBJECTID 7ULL
+/* for storing balance parameters in the root tree */
+#define BTRFS_BALANCE_OBJECTID -4ULL
+
/* oprhan objectid for tracking unlinked/truncated files */
#define BTRFS_ORPHAN_OBJECTID -5ULL
@@ -697,13 +700,17 @@ struct btrfs_csum_item {
} __attribute__ ((__packed__));
/* tag for the radix tree of block groups in ram */
-#define BTRFS_BLOCK_GROUP_DATA (1 << 0)
-#define BTRFS_BLOCK_GROUP_SYSTEM (1 << 1)
-#define BTRFS_BLOCK_GROUP_METADATA (1 << 2)
-#define BTRFS_BLOCK_GROUP_RAID0 (1 << 3)
-#define BTRFS_BLOCK_GROUP_RAID1 (1 << 4)
-#define BTRFS_BLOCK_GROUP_DUP (1 << 5)
-#define BTRFS_BLOCK_GROUP_RAID10 (1 << 6)
+#define BTRFS_BLOCK_GROUP_DATA (1ULL << 0)
+#define BTRFS_BLOCK_GROUP_SYSTEM (1ULL << 1)
+#define BTRFS_BLOCK_GROUP_METADATA (1ULL << 2)
+#define BTRFS_BLOCK_GROUP_RAID0 (1ULL << 3)
+#define BTRFS_BLOCK_GROUP_RAID1 (1ULL << 4)
+#define BTRFS_BLOCK_GROUP_DUP (1ULL << 5)
+#define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6)
+#define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE
+
+/* used in struct btrfs_balance_args fields */
+#define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48)
struct btrfs_block_group_item {
__le64 used;
@@ -911,6 +918,8 @@ struct btrfs_root {
#define BTRFS_DEV_ITEM_KEY 216
#define BTRFS_CHUNK_ITEM_KEY 228
+#define BTRFS_BALANCE_ITEM_KEY 248
+
/*
* string items are for debugging. They just store a short string of
* data in the FS